/**
 * Project Name:kany-utils
 * File Name:MD5Utils.java
 * Package Name:me.kany.utils.encryption.md5
 * Date:2016年9月20日下午10:11:45
 * Copyright (c) 2016, Jason.Wang All Rights Reserved.
 */
package me.kany.utils.encryption.md5;

import java.security.MessageDigest;

/**
 * ClassName:MD5Utils<br/>
 * Function: MD5加密工具类<br/>
 * Date:2016年9月20日下午10:11:45<br/>
 * 
 * @author Jason.Wang
 * @version 1.0
 * @since JDK1.7
 * @see
 */
public class MD5Utils {
	/**
	 * 
	 * string2MD5: MD5加码 生成32位md5码. <br/>
	 *
	 * @author Jason.Wang
	 * @version 1.0
	 * @param inStr
	 * @return
	 * @since JDK1.7
	 *
	 */
	public static String string2MD5(String inStr) {
		MessageDigest md5 = null;
		try {
			md5 = MessageDigest.getInstance("MD5");
		} catch (Exception e) {
			System.out.println(e.toString());
			e.printStackTrace();
			return "";
		}
		char[] charArray = inStr.toCharArray();
		byte[] byteArray = new byte[charArray.length];

		for (int i = 0; i < charArray.length; i++)
			byteArray[i] = (byte) charArray[i];
		byte[] md5Bytes = md5.digest(byteArray);
		StringBuffer hexValue = new StringBuffer();
		for (int i = 0; i < md5Bytes.length; i++) {
			int val = ((int) md5Bytes[i]) & 0xff;
			if (val < 16)
				hexValue.append("0");
			hexValue.append(Integer.toHexString(val));
		}
		return hexValue.toString();

	}

	/**
	 * 
	 * convertMD5: 加密解密算法 执行一次加密，两次解密. <br/>
	 *
	 * @author Jason.Wang
	 * @version 1.0
	 * @param inStr
	 * @return
	 * @since JDK1.7
	 *
	 */
	public static String convertMD5(String inStr) {
		char[] a = inStr.toCharArray();
		for (int i = 0; i < a.length; i++) {
			a[i] = (char) (a[i] ^ 't');
		}
		String s = new String(a);
		return s;
	}
}
